Definition of mightiness in English:

mightiness

noun

  • See mighty

    • ‘The Romans wanted the architecture to show off the magnificence and mightiness of their emperor.’
    • ‘No, mightiness comes later after many battles with enemy units, big spiders, polar bears, wolves, giants, and gangs of thugs.’

Pronunciation

mightiness

/ˈmʌɪtɪnəs/